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Design and analysis of first mirror plasma cleaning electrical circuit for Edge Thomson scattering ITER diagnostics
https://repo.qst.go.jp/records/85587
https://repo.qst.go.jp/records/855879e67ed8c-a0ef-45e0-8007-a35f5b6e5d4c
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-03-23 | |||||
| タイトル | ||||||
| タイトル | Design and analysis of first mirror plasma cleaning electrical circuit for Edge Thomson scattering ITER diagnostics | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Stephan, Ulf
× Stephan, Ulf× Steinke, Olaff× Ushakov, Andrey× Verlaan, Ad× Eiichi, Yatsuka× Masahito, Yokoyama× Rijfers, Andre× Ribeiro, Diogo× Moser, Lucas× Bassan, Michele× P. Maniscalco, Matthew× van Beekum, Erik× Takaki, Hatae× Eiichi, Yatsuka× Masahito, Yokoyama× Takaki, Hatae |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The ITER Edge Thomson scattering system provides measurements of the electron temperature and density profiles at the periphery plasma of the ITER tokamak for physics studies and advanced plasma control. The front-end of the system contains a relatively large 23 cm × 25.8 cm metal first mirror (FM). Radio-frequency plasma is considered to remove contaminants from the FM. The new design approach for the power transmission circuit for plasma cleaning includes a pre-matching element next to the FM and a notch-filter. The FM is water-cooled and the water cooling pipe length is tuned as a notch filter for the driving frequency. The power dissipation in the circuit elements was analyzed in a series of simulations at frequencies 30, 40 and 50 MHz. New plasma impedance values used for the model were measured in argon and helium plasma at 1–10 Pa in a special mock-up of the front-end optics compartment. The results define inductance, capacitance and geometry of pre-matching elements and help to predict the performance of the plasma cleaning circuit. | |||||
| 書誌情報 |
fusion engineering and design 巻 177, p. 113079, 発行日 2022-04 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0920-3796 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.fusengdes.2022.113079 | |||||
